Insulation is a great investment in the future comfort and energy efficiency of your home. Insulation makes New Zealand houses warmer, quieter, healthier and more energy-efficient. Whether you’re constructing a new home or retrofitting insulation to an existing home, at Constructo we have a team of professional installers who you can rely on to do a quality and expert job of insulating your home.

Did you know a third of your home’s warmth can be lost through your roof, a quarter through your walls, and another third through the floor? A properly insulated home is cooler in summer, warmer in winter, better for your health and well being, and will save you money on your energy bill.

Insulation installers


The four main types of material used for installation – wool, polystyrene, glass wool and polyester. They all meet Building Code standard and perform well as insulators.

Glass Wool
Glass wool insulation is also known as fibreglass is made from new and recycled glass, comes in a variety of thicknesses and sizes, is non-toxic, non-combustible and is sound absorbing. Glass wool insulation is often the go-to insulation material by many tradespeople for being a highly effective insulation product. Glass wool traps many tiny pockets of air between the glass which result in high thermal insulation properties.

Polystyrene foam provides excellent thermal insulation. Polystyrene insulation is non-allergenic and is injected with a flame retardant. Polystyrene insulation is inert, resilient, and resistant to water damage. It is ideal for both commercial and residential applications.

Made of new or recycled wool, wool insulation is non-irritant, easy to handle and non-toxic. It is often blended with preservatives, and polyester or resin to make it stronger and more durable. It is also will be typically treated to be pest, mould, fire and drop resistant.

Made from recycled plastic, polyester insulation contains no dusty particles, making it an extra attractive option for those that suffer from allergies. Coming with a 50+ year durability rating, polyester is a sturdy product that can cope with being moved in the future or walked on.

When thinking about installing insulation, it’s important that you consider all of the following areas; ceiling, under the floor, walls and windows including the frames. These four areas are known as ‘thermal envelope’ which is the barrier between heated spaces and the exterior climate. The more insulated your thermal envelope is, the simpler it is to keep your home warm. The layout and construction of your home will dictate what type of insulation you can use, and where the insulation can be placed.

Insulation materials help your house stay warm for longer and reduce the energy required for heating by dissipating heat energy back into the building. High-quality, properly installed insulation will ensure that your house remains comfortable and healthy under all New Zealand conditions.

The effectiveness of insulation is measured by its R-value. Heat always attempts to flow from a hotter place to a colder place, insulation lessens this heat flow. The R-value gauges its resistance to heat flow. The greater the R-value on an insulation material or product, the more it reduces the transfer of heat.

The best time to install new insulation is during construction and just before walls, floors and ceiling spaces are closed in. Insulation is also critical for existing homes. Houses built before 1978 are not likely to have any insulation and houses built before 2007 have a lower standard of insulation than currently required levels. Retrofitting insulation is a fantastic investment as it will not only keep your house warm but will lower your heating costs over time.

When correctly installed, insulation can effectively reduce the amount of noise that travels into and throughout your home. Insulation is an excellent sound-absorbing material that can help reduce noise transmission through walls, ceilings, and floors, making the home a quieter place to live and relax.


Our insulation experts are exceptionally knowledgeable about efficiency and all current regulations around insulations. Constructo will be there to guide you through the entire process, giving you the confidence to make educated decisions about how best to insulate your home. We have a range of insulation solutions for your home’s roofs, ceilings, walls and floors. We provide flexible ceiling, wall and underfloor Insulation quotes throughout New Zealand. We have a fast turnaround from quote to installation.

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